Ejecting structure for bumper decoupling cover plate in an injection mold

Abstract

The technical solution of the present invention is an ejection structure for a bumper decoupling cover plate in an injection mold, which includes a core plate, an ejector rod panel, an ejector rod bottom plate, an ejection oil cylinder and a moving mold fixing plate. The ejector rod panel and the ejector rod bottom plate are connected to each other. The ejection oil cylinder is connected to the ejector rod panel through an oil cylinder rod. At the position corresponding to the small arrow of the product on the core plate, there are an inclined ejector block and a straight ejector block. The inclined ejector block is located on the upper surface of the small arrow of the product, and the straight ejector block is located on the lower surface of the small arrow of the product. The lower part of the inclined ejector block is connected to the ejector rod panel and the ejector rod bottom plate through an inclined ejector rod after passing through the core plate. The lower part of the straight ejector block is connected to the ejector rod panel and the ejector rod bottom plate through a straight ejector rod after passing through the core plate. Ejector rods and flat ejector rods are also arranged at the ejector rod panel and the ejector rod bottom plate. The ejector rods and the flat ejector rods are located on the lower surface of the product after passing through the core plate. In the present invention, a straight ejector block and an inclined ejector block are used in cooperation to eject at the small arrow of the product, avoiding deformation at the small arrow when the product is ejected.

Description

Technical Field

[0001] The present invention relates to an injection mold, and more particularly to an ejection structure of a bumper decoupling cover plate in an injection mold. Background Art

[0002] The product features of the bumper decoupling cover plate are simple, and its product structure is as Figure 1 shown. However, the side of the product includes a structure in the shape of a small arrow, with the width of the small arrow being about 2 mm. Conventionally, ejector pins are designed for the small arrow part for ejection and demolding. However, due to the small size of the small arrow, the size of the ejector pin is very small (Φ1.5 mm). Therefore, the ejection force is small and the small arrow is prone to deformation during demolding. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides an ejection structure of a bumper decoupling cover plate in an injection mold.

[0004] The technical solution of the present invention is an ejection structure of a bumper decoupling cover plate in an injection mold, including a core plate, an ejector pin panel, an ejector pin bottom plate, an ejection oil cylinder, and a moving mold fixing plate. The ejector pin panel and the ejector pin bottom plate are connected to each other. The ejection oil cylinder is connected to the ejector pin panel through an oil cylinder rod. At the position corresponding to the small arrow of the product on the core plate, there are an inclined ejector block and a straight ejector block. The inclined ejector block is located on the upper surface of the small arrow of the product, and the straight ejector block is located on the lower surface of the small arrow of the product. Below the inclined ejector block, an inclined ejector rod passes through the core plate and is connected to the ejector pin panel and the ejector pin bottom plate. Below the straight ejector block, a straight ejector rod passes through the core plate and is connected to the ejector pin panel and the ejector pin bottom plate. At the ejector pin panel and the ejector pin bottom plate, there are also ejector pins and flat ejector pins. The ejector pins and the flat ejector pins pass through the core plate and are located on the lower surface of the product.

[0005] Preferably, the inclination direction of the inclined ejector rod is perpendicular to the small arrow of the product. During mold opening and ejection, while the inclined ejector block and the straight ejector block move upward synchronously, the inclined ejector block withdraws outward.

[0006] Preferably, a self-lubricating guide sleeve is arranged in the core plate, and the inclined ejector rod and the straight ejector rod pass through the self-lubricating guide sleeve.

[0007] Preferably, the bottom of the straight ejector rod is connected to the ejector pin panel and the ejector pin bottom plate through a straight ejector rod backing plate, and the bottom of the inclined ejector rod is connected to the ejector pin panel and the ejector pin bottom plate through a slide foot.

[0008] In the present invention, a small straight ejector block is used for ejection at the small arrow of the bumper decoupling cover plate, and an inclined ejector block demolding structure is made on the small straight ejector block to assist in demolding the small arrow of the decoupling cover plate, avoiding deformation at the small arrow when the product is ejected.

[0009] The present invention realizes the demolding of the product by using the synchronous ejection of the direct ejector and the inclined ejector, which can make the product not easily deformed compared with the traditional ejector pin ejection, and ensure the dimensional requirements of the product. Description of the Drawings

[0010] Figure 1 It is a schematic structural view of the bumper decoupling cover plate of the present invention;

[0011] Figure 2 It is a top view of the present invention;

[0012] Figure 3 is Figure 2 A sectional view taken along the direction of A-A;

[0013] Figure 4 is Figure 2 A sectional view taken along the direction of B-B;

[0014] Figure 5 It is a schematic structural view of the ejection part of the product in the present invention;

[0015] Figure 6 is Figure 5 A schematic structural view from another perspective after removing the ejector pin panel and the ejector pin bottom plate;

[0016] Wherein: a - product; 1 - core plate; 2 - ejector pin panel; 3 - ejector pin bottom plate; 4 - ejection oil cylinder; 5 - moving die fixing plate; 6 - inclined ejector block; 7 - direct ejector block; 8 - inclined ejector rod; 9 - direct ejector rod; 10 - ejector pin; 11 - flat ejector pin; 12 - self-lubricating guide sleeve; 13 - direct ejector rod backing plate; 14 - sliding foot. Detailed Embodiment

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] As Figures 1 to 6 shown, the present invention provides an ejection structure for a bumper decoupling cover plate in an injection mold, including a core plate 1, an ejector pin panel 2, an ejector pin bottom plate 3, an ejection oil cylinder 4 and a moving die fixing plate 5. The ejector pin panel 2 and the ejector pin bottom plate 3 are connected to each other. The ejection oil cylinder 4 is connected to the ejector pin panel 2 through an oil cylinder rod. An inclined ejector block 6 and a direct ejector block 7 are arranged at the position of the small arrow of the product corresponding to the core plate 1. The inclined ejector block 6 is located on the upper surface of the small arrow of the product, and the direct ejector block 7 is located on the lower surface of the small arrow of the product. The lower part of the inclined ejector block 6 is connected to the ejector pin panel 2 and the ejector pin bottom plate 3 through an inclined ejector rod 8 passing through the core plate 1. The lower part of the direct ejector block 7 is connected to the ejector pin panel 2 and the ejector pin bottom plate 3 through a direct ejector rod 9 passing through the core plate 1. Ejector pins 10 and flat ejector pins 11 are also arranged at the ejector pin panel 2 and the ejector pin bottom plate 3. The ejector pins 10 and the flat ejector pins 11 pass through the core plate 1 and are located on the lower surface of the product.

[0019] On the basis of the above solution, the inclination direction of the inclined ejector rod 8 is perpendicular to the direction of the small arrow of the product. When the mold is opened and ejected, while the inclined ejector block 6 and the straight ejector block 7 move upward synchronously, the inclined ejector block 6 withdraws outward.

[0020] In addition, a self-lubricating bushing 12 is provided in the core plate 1, and the inclined ejector rod 8 and the straight ejector rod 9 pass through the self-lubricating bushing 12.

[0021] Wherein, the bottom of the straight ejector rod 9 is connected to the ejector rod panel 2 and the ejector rod bottom plate 3 through a straight ejector rod backing plate 13, and the bottom of the inclined ejector rod 8 is connected to the ejector rod panel 2 and the ejector rod bottom plate 3 through a slide foot 14.

[0022] After the injection mold of the present invention is opened, the ejector oil cylinder 4 controls the ejector rod panel 2 and the ejector rod bottom plate 3 to eject upward. The ejector rod 10 and the flat ejector rod 11 abut against the lower surface of the product. The straight ejector block 7 at the top of the straight ejector rod 9 abuts against the lower surface of the small arrow of the product. The inclined ejector block 6 at the top of the inclined ejector rod 8 is located on the upper surface of the small arrow of the product. The ejector rod 10, the flat ejector rod 11, the straight ejector rod 9, and the inclined ejector rod 8 synchronously eject the product upward. Among them, the inclined ejector block 6 slides outward while ejecting upward until it completely withdraws from the small arrow area of the product. Finally, the straight ejector rod 9 ejects the small arrow of the product through the straight ejector block 7, effectively ensuring that the small arrow of the product will not deform during the ejection process.

[0023] The above is only the preferred embodiment of the present invention, and it does not impose any form of limitation on the invention. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An ejection structure for a bumper decoupling cover plate in an injection mold, comprising a core plate (1), an ejector rod panel (2), an ejector rod bottom plate (3), an ejection oil cylinder (4) and a moving mold fixing plate (5). The ejector rod panel (2) and the ejector rod bottom plate (3) are connected to each other. The ejection oil cylinder (4) is connected to the ejector rod panel (2) through an oil cylinder rod, and is characterized in that: At the position corresponding to the small arrow of the product on the core plate (1), a lifter block (6) and a straight ejector block (7) are provided. The lifter block (6) is located on the upper surface of the small arrow of the product, and the straight ejector block (7) is located on the lower surface of the small arrow of the product. Below the lifter block (6), after passing through the core plate (1) by a lifter rod (8), it is connected to the ejector plate (2) and the ejector plate base (3). Below the straight ejector block (7), after passing through the core plate (1) by a straight ejector rod (9), it is connected to the ejector plate (2) and the ejector plate base (3). At the ejector plate (2) and the ejector plate base (3), ejector pins (10) and flat ejector pins (11) are also provided. After passing through the core plate (1), the ejector pins (10) and the flat ejector pins (11) are located on the lower surface of the product; a self-lubricating bushing (12) is provided inside the core plate (1), and the lifter rod (8) and the straight ejector rod (9) pass through the self-lubricating bushing (12); the bottom of the straight ejector rod (9) is connected to the ejector plate (2) and the ejector plate base (3) through a straight ejector rod backing plate (13), and the bottom of the lifter rod (8) is connected to the ejector plate (2) and the ejector plate base (3) through a slide block (14).

2. The ejection structure of the bumper decoupling cover plate in an injection mold according to claim 1, characterized in that: The inclination direction of the lifter rod (8) is perpendicular to the small arrow of the product. When ejecting during mold opening, while the lifter block (6) and the straight ejector block (7) move upward synchronously, the lifter block (6) withdraws outwardly.

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